<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			*{
				margin: 0;
				padding: 0;
			}
			div{
				width: 200px;
				height: 200px;
			}
			
			
			div[class]{
				background: deeppink;
			}
			div.pink{
				background: pink;
			}
		</style>
	</head>
	<body>
		<div class="pink" id="test" >
			我是div
		</div>
	</body>
</html>
